TW401512B - Method of detecting and compensating/identifying a wiring error and arrangement for use in an electrical utility meter - Google Patents

Abstract

The present invention includes an electrical utility meter operable to measure power consumption. The method detects and compenents for one or more wiring errors that effects the power consumption measurement of the electrical utility meter. The method includes the step of: obtaining measured phase angle data for a plurality of phases in a polyphase electrical system; periodically performing one or more diagnostic tests using the measured phase angle data to determine whether a wiring error is present, automatically adjusting the operation of the electrical utility meter to effect a compensation for the wiring error, said compensation increasing an accuracy of power consumption measurement of the electrical utility meter. The meter is operable to detect and compensate for wiring errors including polarity errors and cross phasing errors. According to another method of the present invention, the meter is operable to determine automatically the service type to which it is connected.

Description

W Committee member "-:::}. C " ^-Printed by Good Industry Consumer Cooperatives, Intellectual Property Bureau, Ministry of Economic Affairs

. Charging operation steps ^) The controller executes step 912 after performing step 814 in FIG. 8. In step 814, the controller has determined that I < Λ and I < b have acceptable 値 and I < c is not acceptable (see steps 706 and 802). Therefore, in step 912 of FIG. 9, the controller determines whether there is a polarity error in 14. To achieve this, the controller decides I < c + 180. Whether it is within ± 90 of V < c. Inside. As in the case of steps 902 and 908, the answer at step 902 is always correct for this embodiment. However, as discussed above, the decision of step 912 is necessary. In other embodiments, the range of acceptable current phase 値 is less than ± 90. If the decision is positive at step 912, the current polarity error is indicated for the phase. C and the controller implements the appropriate compensation (step 914). This compensation is analogous to the one described above in relation to steps 904 and 910. When compensation is implemented, the controller returns to normal charging operation (step 906), as illustrated in FIG. If the decision is negative in step 912, the wiring error is unsuccessfully diagnosed and the controller returns to normal billing operation (step 906). It is remarkable that the above-mentioned embodiment is merely illustrative. Those skilled in the art can easily design and implement it, which combines the principles of the present invention and is within that spirit and scope. For example, the operations of the DSP 128 of FIG. 4 may be implemented by two or more discrete digital elements. This strong digital processing circuit replaces the DSP component symbol, indicating that those skilled in this art can conveniently apply the Chinese National Standard (cnls) a at an appropriate 42-sheet scale. 丨 · / y (Please read the precautions on the back before filling in this Page) · — 77 ------ Order '-------- Printed A7' B7 by the Consumers' Cooperatives of the Central Government Bureau of the Ministry of Economic Affairs V. Description of the Invention (I) Field of the Invention The present invention is broadly Related to electrical equipment meters, and particularly to electrical equipment meters used in multi-phase power configurations. BACKGROUND OF THE INVENTION Electrical equipment service providers, or simply devices, monitor the energy used by users through electrical equipment meters. Electrical equipment meters track the amount of energy consumed ', typically measured in kilowatt-hours ("kwh"). User equipment. Equipment consumption information is used primarily for billing purposes, and for resource allocation and other purposes. The equipment generates multi-phase power, and typically three-phase power. Multi-phase power supplies are supplemented by alternating current power supplies on most power lines. The voltage waveform at each power line has a unique phase angle. When only a single phase of the multi-phase power supply is typically provided for a single family home, the true multi-phase electrical power is generally provided to larger equipment such as industrial and industrial structures. Historically, electrical equipment meters have used inductive rotating disks to measure energy consumption. In this type of electric meter ', the rotation speed of the rotary disk varies in proportion to the amount of power consumed. The rotating disk drive mechanical counter 'provides the accumulated energy usage information in turn. Recent developments in electrical equipment meters are electricity meters. The meter replaces the old-style inductive rotary meter design. The meter has many advantages, including the advantage of providing features that go beyond simple power consumption counting. The meter may, for example, track energy requirements, power factor, and power measurements for each phase. In addition, the meter can change this method by calculating energy consumption to accommodate many building wiring and power packs. 3 This paper size is applicable to China National Standard (CNS) A4 specification (210X297 mm) (Please read the notes on the back before filling out (This page)

* 1T λτίκ Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Λ7 "一 —............,-| |,:.. Description of the invention () " 88, ft. 〇S |) | 10 Electric meter 12 Phase A power line 14 Phase B power line 16 'Phase C power line 18 Neutral line 20 Phase A current sensor 22 Phase B current sensing 24 phase C current sensor 26 phase A voltage sensor 28 phase B voltage sensor 30 phase C voltage sensor 32 first transformer 34 second transformer 36 third transformer 102 sensor circuit 104 measurement circuit 106 Switching circuit 108 processor 110 non-volatile memory 112 display 114 communication port 116 first multiplexer 118 second multiplexer 120 second multiplexer 43 This paper standard applies to China National Standard (CNS) A4 specification (210 χ 297g t) (Please read the notes on the back before filling this page)

Α7. Β7 401512 5. Description of the invention (y) · State, therefore increasing the versatility of the meter. JI—Table 4 has a fairly precise diagnosis. For example, the U.S. patent teaches a diagnostic toolbox for this meter. The diagnostic toolbox measures the voltage and current amount and phase angle, and then compares the measurement 値 with the expected 决定 to determine if the wiring error exists. Wiring error is an error, either in itself or in the interface between the meter and the motor system, whose wiring is connected to the motor system. Wiring errors typically cause a meter to make substantially inaccurate energy measurements. As a result, wiring errors can cause substantial revenue loss to the equipment because the meter does not accurately record the actual amount of energy consumed. · The disadvantage of this table is that its displayed currency has confirmed the error, but it requires service to correct the error. Therefore, when an error can be detected and displayed, the device will continue to lose revenue until service personnel are dispatched to correct the error. Other shortcomings are that the meter must be pre-planned for the wiring configuration and voltage level, or service form, which is connected to the meter. This pre-planning requirement is not desirable. For example, planning the meter to guide unnecessary complexity into the item and delivery system during manufacturing. Likewise, requiring a technician to provide this type of input to the meter unforeseenly increases the complexity associated with installing the meter during installation. SUMMARY OF THE INVENTION The present invention overcomes these and other shortcomings of conventional technology by automatically identifying the service form to which the meter is connected to facilitate diagnosis and adjusting the meter operation to compensate for any wiring errors detected during the diagnosis. 4 (Please read the notes on the back before filling out this page) -'β Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economy

VIII '. * V. Description of the invention 112 First analog-to-digital converter 124 Second analog-to-digital converter 126 Third analog-to-digital converter 128' Digital signal processor 402, 404, 406, ......, 426 , 502,504,506, ....., 514, 650, 652, ....., 660, 704,706,, 720, 721,722, 723,724, 802,804 ..... 818 ----- Control step 508 block- ------------ ^ ----- (Please read the notes on the back before filling out this page) __IT, ________ Spring. -1''0 Employees ’Consumption of Intellectual Property, Ministry of Economic Affairs The paper size printed by the cooperative is applicable to Chinese national standards (CNSUl specification (210 X 297 mm). Printed by the Consumer Cooperative of the Shiyang Standard Bureau of the Ministry of Economic Affairs and printed by 401512 A7 B7. V. Description of the invention (") The present invention includes electrical equipment and meters that can be operated to Measuring the power consumption of a multi-phase motor system β This method detects and compensates for one or more wiring errors that affect the power consumption measurement of the motor equipment. The method includes the steps of: obtaining the measured phases of the multi-phase motor system Phase angle data; periodic implementation of one or more diagnostic tests using the measured phase angle information to determine A wiring error exists, and the operation of the electrical equipment meter is automatically adjusted to compensate for the wiring error, the compensation increases the accuracy of the power consumption measurement of the electrical equipment meter β the meter can operate to detect and compensate the wiring error ' It includes polarity error and cross-phase error. According to another method of the present invention, 'the meter can be implemented to automatically determine the service form, and to which the meter is connected.' The features and advantages of the present invention will become apparent to those skilled in the art. More clearly refer to the following detailed description and accompanying diagrams. The diagram is a brief illustration. Figure 1 is a schematic diagram of the electrical equipment meter used to count three-phase electrical service wiring. Figure la shows the phase diagram illustrating the three voltage and current phases. The relationship between the meters is shown in Figure 1. Figure 2 is a perspective view of an electrical equipment meter installed to count three phases of electrical energy in one way including voltage polarity errors, where one voltage phase is 180 ° different phases; 2a shows the phase diagram showing the relationship between the three voltage and current phases. The meter is shown in Figure 2; 5 paper rulers Applicable to Chinese National Standard (CNS) Μ specifications (21〇297 mm) (Please read the notes on the back before filling out this page) Order 〇Γ. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs A7. B7 V. Invention Description ( 4) Figure 3 wiring is used to count three phase electrical power including cross phase error in one way where two current phases are cross connected; Figure 3a is a phase diagram showing the relationship between the three voltage phases and current phases as shown 3 is measured by an electric meter; FIG. 4 shows a block diagram of a motor-prepared electric meter of the present invention; FIG. 5 shows a flowchart of the entire operation of a controller of an electric meter of the electric equipment of the present invention; A more detailed flowchart of the operation performed by the controller; Figures 7, 7a, 8 and 9 show a detailed flowchart of the operation by the controller to detect several wiring errors and implement compensation for the detected wiring errors; and 10 shows the expected table relative to several or service formats. Detailed description Figure 1 shows an abstract sketch of an electrical equipment meter that is wired for counting three-phase power services. The display system is a meter 10, and a set of multi-phase power lines includes a phase A power line 12, a phase B power line 14, a phase C power line 16, and a neutral line 18. The meter 10 includes a sensor circuit including a phase A current sensor 20, a phase B current sensor 22, a phase C current sensor 24, a phase A voltage sensor 26, a phase B voltage sensor 28, and Phase C voltage sensor 30. The meter 10 includes a measurement circuit, not shown (see FIG. 4), generates power consumption measurements and information from the current and voltage detected by the voltage sensors 26, 28, and 30 and the current sensors 20, 22, and 24. The phase A current sensor 20 is connected to the first transformer 32, and it takes turns 6 (please read the precautions on the back before filling this page) », -0 This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) ) Printed by member of the Central Standards Bureau of the Ministry of Economic Affairs and Consumer Cooperative A7. B7 V. Description of the invention (s) Place it effectively to detect the current of the phase A power line 12. The phase B current sensor 22 is also connected to the second transformer 34, which is effectively placed in turn to detect the current of the phase B power line 14. The phase C current sensor is connected to an analog third transformer 36. The phase A voltage sensor 26 is connected between the phase A power supply # 12 and the neutral line 18. The phase B voltage sensor 28 is connected between the phase B power line 14 and the neutral line 18 and the β phase C voltage sensor 30 is connected between the phase C power line 16 and the neutral line 18. The phase A power line 12, the phase B power line 14, and the phase C. power line are part of a 120-volt four-wire Y-shaped service form, which are well known in the art. Multi-phase power is provided to the user in several configurations and is familiar with service forms. A service form is typically defined by the nominal voltage level and wiring configuration. A wiring configuration is further defined by the number of wires (three wires or four wires) and the wiring relationship (Y or triangle) between the phases. For example, the 120-volt four-wire crimp service has a 120-volt nominal voltage and four-wire crimp wiring configuration. The most commonly used service format is standardized and familiar to those skilled in the art. Different standard watt-hour meter forms, familiar with meter styles, are used to measure the power consumption of different service forms. The typical power meter 10 of FIG. 1 has a 9S power meter style. As is well known in the art, the number of factors suitable for a particular user equipment's meter style depends on the number of factors, including: the type of service, the maximum level of expected current; the accuracy of the demand; the cost: and whether the wiring configuration is the same with. The commonly used meter styles include these designed as 5S, 45S, 6S, 36S, 9S, 16S, 12S and 25S meter styles, and each of the 7 paper sizes applies Chinese National Standard (CNS) A4 specifications (210X297 mm) (please Read the notes on the back before filling in this page) Order 401512 A7. B7 2 Printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (0 can count several service forms. It is used for the meter 9-9S meter borrowing Given by the case and the implementation of the present invention is not limited to a special meter style. Figure la shows a vector diagram illustrating the relationship between the three voltage and current phases detected by the sensing circuit of the meter 10, as shown in the wiring diagram. In general, in a four-wire Y configuration, the three voltage phases will typically be separated by a phase angle of approximately 120 °, such as the three current phases. Each phase current and relative phase voltage are typically By _〇. To 90. The phase angle is separated, such as 30 °, as shown in Figure ia. The phase angle changes according to the load form, and it is attached to the motor system being counted. For explaining some of the invention For the purpose of this point, Figures 2 and 3 illustrate two situations where the wiring error can cause a loss of revenue to the device. Figure 2 shows the wiring error in a way that includes well-known voltage polarity errors. The electrical equipment meter. A voltage Polarity error is an error, in which the measurement from the voltage phase is 180 ° out of phase. For illustration purposes, the components of Figure 2 will have the same reference symbols as those of Figure 1. As shown in Figure 2, between phase C power line 16 and The phase C voltage sensor 30 connection has been connected side-by-side with the connection between the neutral line 18 and the ancestral C voltage sensor 30. The result of this side-by-side connection is the phase detected by the sensing circuit of the meter 10 C voltage will be detected when 180 ° reverse, as shown in Figure 2a. Because the phase C voltage is 180 ° reverse, the phase C power measurement, Ve * Ic, will create a negative 値. Negative power consumption measurement The guidance significantly reduces all power consumption measurements, resulting in a loss of equipment revenue. According to the present invention, as discussed in more detail below in relation to Figures 4 and 7, the measurement circuit of the meter 10 is discriminated and, as a result, the voltage polarity is compensated. The difference is shown in Figures 2 and 2a. ^ The paper size of the final paper is in accordance with the Chinese national standard (CMS> A4 specification (21〇 > < 297mm) (Please read the precautions on the back before filling this page). Π ο- · 401512 A7 __.______ B7___ V. Description of the invention (?) As a result, the compensation power consumption measurement does not have a negative value and is therefore more accurate. (Please read the precautions on the back before filling this page) Figure 3 is not displayed in one way Including well-known cross-phase error wiring error-electrical equipment meter diagram. Cross-phase error is error, in which measurements from two current phases are exchanged, usually due to cross wiring. For illustration purposes, the elements of FIG. 3 will have the same reference symbols as the elements of FIG. As shown in FIG. 3, the connection between the first transformer 32 and the phase A current sensor 20 has been connected side by side with the connection between the second transformer 34 and the phase B current sensor 22. The side-by-side result is that the detection circuit treats the phase A current as the phase B current, and vice versa. Figure 3a shows a vector diagram illustrating the relationship between the three voltage phases and current phases measured by the detection circuit. The circuit has the cross-wiring error shown in Figure 3. Cross-phase also results in a substantially inaccurate power measurement, which causes a loss of revenue for the device. According to the present invention, as discussed in more detail below in relation to Figs. 4 and 8, the measuring circuit of the meter 10 is discriminated and compensated as a result. The cross-phase error is shown in Figs. 3 and 3a. FIG. 4 shows a block diagram of an electric meter for a motor device according to the present invention. The electric meter 10 essentially includes a sensor circuit 102 and a measurement circuit 104. The sensor circuit 102 includes a phase A current sensor 20, a phase B current sensor 22, and a phase C current sensor 24, as shown in Figs. 1, 2 and 3, collectively referred to as a multi-phase current sensor. The sensor circuit 102 further includes a phase A voltage sensor 26, a phase B voltage sensor 28, and a phase C voltage sensor 30. As shown in Figs. 1, 2 and 3, they are collectively referred to as a multi-phase voltage sensor. Tester. The measurement circuit 104 further includes a conversion circuit 106, a processor 108, a non-volatile memory 110, a display 112, and a communication port 114. ____9_ This paper size applies Chinese National Standard (CNS) A4 (210X297 mm) Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (i?) Phase A current sensor 20 is connected to receive a signal It is suggested that current flows through the phase A power line 12 (see FIG. 1). To achieve this, as shown in FIG. 1, the phase A current sensor 20 is connected to the first transformer 32, which is effectively arranged to detect the current of the phase A power line 12 and to produce a signal indicating the amount of current. The phase A current sensor is further connected to the measurement circuit 104 through the first multiplexer 116. The phase A current sensor 20 may include a current converter or other device well known in the art to detect the current from the first transformer 32 and produce a signal indicating the amount of detected current. In yet another embodiment, the current sensor 20 directly measures the current flowing through the phase A power line 12 and as a result, the first transformer 32 is not required. The direct current measurement i is implemented in an independent meter style, which is well known. A built-in line sensor is suitable as a current sensor in a stand-alone meter style. The phase B current sensor 22 is connected to receive a signal indicating that a current flows through the phase B current sensor 14 (see FIG. 1), which is analogous to the phase A described above in one way. The phase B current sensor 22 is further connected to the measurement circuit 104 through the first multiplexer 116. Similarly, the phase C current sensor 24 is connected to receive a signal indicating that a current flows through the phase C current line 16 (see FIG. 1). The phase C current sensor 24 is also connected to the measurement circuit 104 through the first multiplexer 116. The phase B current sensor 22 and the phase C current sensor 24 preferably have the same structure as the phase A current sensor 20.

The phase A voltage sensor 26 is directly connected to the phase A power line 12 (see FIG. 1) to obtain a voltage measurement. To this end, the phase A voltage sensor 26 suitably includes a high-resistance voltage divider. The phase A voltage sensor 26 is further connected to the measurement circuit 104 through the second multiplexer 118. Phase B _ίο ___ This paper is again applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling this page) Order 9 401512 Α7. Β7 4015- 2 V. Description of the invention (q) The voltage sensor 28 printed by the Consumer Standards Cooperative of the Central Bureau of Standards of the Ministry of Economics is similarly connected to obtain a voltage measurement from the phase B power line 14, and further connected to provide the voltage measurement to the second multiplexer 118. The phase C voltage sensor 30 has a similar structure and is connected to the phase C power line 16 and the multiplexer 118 is similar to the phase A voltage sensor 26 and the phase B voltage sensor 28. The conversion circuit 106 is a circuit operable to accept multi-phase voltage and multi-phase current measurement signals and generate digital data. • The generated digital data includes power consumption data and measured voltage and current quantities and phase angle data. In a typical embodiment, the conversion circuit includes first, second and third multiplexers 116, 118 and 120, respectively first, second and third analog-to-digital converters (A / D) i 12, 124 And 126 and digital signal processor 128. The elements of the conversion circuit 106 described above can be appropriately incorporated into a single semiconductor substrate. An example of a suitable conversion circuit is a power measurement integrated circuit found in the model S4 electrical equipment. The electrical mine is operatively planned by Landis & Gyr Utility Service, Inc. Controller 108, and program instructions are implemented to accept from the conversion circuit 106 Digital data, monitor and record the power consumption of digital data, and determine whether one or more wiring errors exist using digital data. The controller is suitably a K0 series microcontroller available from NEC. The controller 108 generally includes firmware, or in other words, memory, in which program instructions are stored. Alternatively, the program instructions may be stored in the non-volatile memory 110 β. The third multiplexer 120 and the third A / D 126 provide additional functions to the meter 10, which are beyond the scope of the present invention. In operation, phase A, B, and C current sensors 20, 22, and 24 minutes 11 (Please read the precautions on the back before filling out this page) pu y Order ftwr. This paper size applies Chinese National Standard (CNS) A4 Specifications (210 × 297 mm) 401512 'A7. _________B7 _ printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention () Detect the phase A current, phase B current and phase C current separately. The detector 20 provides a phase A current measurement signal to the first multiplexer Π6, and the phase B current sensor 22 provides a phase B current measurement signal ... to the first multiplexer 116. and a phase C current sensor 24 provides a phase C current measurement signal to the first multiplexer 116. Each current measurement signal typically includes a signal with a voltage level, which represents the instantaneous current level at an individual phase. For the current converter is designed for equipment meter use The amplitude of the current measurement signal is quite low. For example, in the embodiment, a power management integrated circuit of Landis & Gyr Utility Service, Inc. is used. The current measurement signal measures from O.OVrms to 0.3Vrms maximum. Other scaling factors are of course used in other embodiments of 1. The first multiplexer 116, under the control of the controller 108, provides an immediate current measurement signal from the phase A, phase B or phase C current measurement signal to the A / D converter. 122. The first multiplexer 116 typically provides each phase in fast consecutive cycles, so that each phase is provided to the first A / D converter 122 every third cycle. According to the exemplary embodiment described, the The first multiplexer 116 provides a current measurement signal. The first A / D converter 122 receives and samples or digitizes a fast continuous immediate current measurement signal. The first A / D converter 122 then provides a DSP 128 digital current measurement sample Flow, each representing the amount of one of the three phase currents at a particular instant. The digital word flow provided by the A / D converter U2 is called a digital current measurement signal.

Simultaneously, the phase A, B, and C voltage sensors 26, 28, and 30 detect the phase A voltage, phase B voltage, and phase C voltage, respectively. Phase A 12 sheet paper size is applicable to Chinese national standard TCNS) " A4 specification (21 〇X 297 public ^ " I --------- £ — (Please read the precautions on the back before filling this page) Order

P 401512 Consumer cooperation with China Standards Bureau of the Ministry of Economic Affairs, printed by Du A7 B7 V. Description of the invention (η) The voltage sensor 26 provides the phase A voltage measurement signal to the second multiplexer 118 and the phase B voltage sensor 28 The phase B voltage measurement signal is provided to the second multiplexer 118 and the phase C voltage sensor 30 provides a phase C current measurement signal to the second multiplexer 118. Each voltage measurement signal typically has a voltage level signal, which represents a separate phase from the voltage level. In a typical embodiment, using a power management integrated circuit 'the voltage sensor is planned to provide a voltage measurement signal from O.OVrms to a_3Vrms maximum. Other scaling factors are of course used in other embodiments. The second multiplexer U8 then provides, at the same time, the phase A, phase B, or phase C voltage measurement signals to the second A / D converter 124. To achieve this, the second multiplexer II8 is controlled by the controller 108. The second multiplexer 118 typically provides each phase voltage measurement signal in fast continuous cycles so that each phase is provided to the second A / D converter 124 every third cycle. In any event, the second A / D converter 124 accepts and samples or digitizes the fast continuous immediate current measurement signal. The second A / D converter 124 then provides digital current measurement sample flow, or only digital voltage measurement signals to the DSP 128. The first A / D converter 122 and the second A / D converter 124 provide digital voltage and current measurements with a predetermined coordinate phase relationship. According to an exemplary embodiment, the second multiplexer 118 provides a voltage measurement signal at the same rate as used by the first multiplexer 116 to provide the current measurement signal to the first A / D converter 122. Furthermore, the first multiplexer 116 and the second multiplexer 118 operate in a coordinate form to provide a specific phase current measurement signal and a specific phase voltage measurement signal simultaneously. For example ‘configure with four wires γ-shaped meters’ the first _13_ · —_ (Please read the precautions on the back before filling this page)

Ka ——- JIIΊ1Τ ------ D, ------ il ——--〗 —— ^-I This paper size is applicable to China National Standard (CNS) A4 specification (21〇 > < 297) PCT) Consumer cooperation of the Central Standards Bureau of the Ministry of Economic Affairs, printed A7 B7 V. Description of the invention (θ) The multiplexer 116 provides the phase x current measurement signal and the second multiplexer 118 provides the phase \ voltage measurement signal, of which χ rotates between A, 3 and 0. The DSP 128 in the conversion circuit 106. accepts the digital current measurement signal and the digital voltage measurement signal determines the power consumption. To achieve this, the DSP 128 selectively multiplies the voltage measurement samples and the current measurement samples, which are accepted by the A / D converters 122 and 124, and then added. For example, in a four-profile configuration, the appropriate power calculation system is: (1) POWER-vaia + vbIb + vcIc Power is supplied in watts. 'DSP' 128 The above calculations are performed in the manner described below. As described above, the A / D converters 124 and 124 simultaneously increase the current and voltage measurement samples for each phase. The DSP 128 multiplies each voltage measurement sample to accept the current measurement samples simultaneously. The final product is added to the running total or sum. In other words' if DIG_VX is from the digital voltage measurement signal for phase X sampling and DIG_IX is from the digital current measurement signal for phase X sampling, then the DSP 128 performs the following calculations: (2) POWER = SUM (CAL_Vx DIG_VX 氺 CAL_IX DIG_Ix ) for x = {A, B, C, A, B… ..} where CAL_VX and CAL_ Ix are calibration constants per phase. This per-phase calibration constant is empirically determined during manufacture and describes the performance of the voltage change and current sensing device. The DSP 128 provides power measurement data to the controller 108 at regular time intervals. The power measurement data includes a total of 14 power for each time interval. The paper size is applicable to Chinese national standards (CNS> A4 specification (210 X 297 mm)). (Please read the precautions on the back before filling this page) Order 401512 Α7 Β7 4BlSi.2 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of Invention (Λ) and. The controller 108 then accumulates the power measurement data until The predetermined watt-hour unit lower limit has been reached. When the predetermined watt-hour unit lower limit has been reached 'the controller 10S generates a power consumption pulse and then increments the power consumption counter. The controller 1.08 then repeats the process or in other words, starts the cumulative power measurement The data is reached again until the predetermined 'watt-hour lower limit is reached. The power consumption counter is a device where the user's power consumption is tracked. For example, as is well known, the device can determine the consumption of a particular user for a particular payment period by Power consumption counter 値 minus the power consumption meter at the beginning of the pay period The controller 108 preferably provides the power consumption counter information to the non-volatile memory 110 and the display 112. The display 112 then provides a graphic description of the power consumption counter information, which can be provided by the equipment personnel. The obtained readings. The non-volatile memory 110 stores power consumption counter information for storage purposes if the power is interrupted. Optionally, the controller 108 further provides the power consumption counter information and other information to the communication port Π4. The communication port 114 can then communicate the information on an external communication device, such as a public telephone network 'to the central processing unit of the device. In this way, the device can track and pay for the power consumption recorded by the meter 10 without Require employees to observe the meter in person. The controller 108 additionally has the ability to provide selectable power information, such as VA, VAR, and power factor. The number of VA is a well-known amount of power consumption. That is, in some cases, it is more accurate than the measured watts. Quantify the actual power consumed by the user. The controller 108 is operable to determine this Select function 15 applies China National Paper-scale prospective Qiao (CNS) Α4 size (210X297 mm) * Introduction ΓΊ. (Please read the Notes on the back to fill out this page)

Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 401512 A7 _______—_ B7 _'_ V. Description of the invention () Rate information, including VA, using methods well known in conventional technology. The controller 108 also generally controls the operation of the measurement circuit 104, and in particular the first, second and third multiplexers 116, 118 and 120 are first, second and third A / D converters, respectively. 122, 124, and 126, respectively, and the digital signal processor 128, to achieve this purpose, the processor provides timing signals and other control signals to the different components of the conversion circuit 106 as necessary to perform the operations described above. In controlling the operation of the measurement circuit 104, the controller 108 can perform a compensation if a wiring error is detected. To implement compensation The operation of the controller 108 is further investigated in detail below with reference to Figs. 7, 8 and 9. In addition to generating power consumption data, the DSP 128 also determines and provides other information to the controller 108. In particular, the DSP 128 provides, for each phase, the measured voltage and current amount data, and the measured voltage and current phase angle data. The measured voltage and current data typically represent RMS 每 per phase. The measured voltage and current phase angle data typically represents the phase angle of each phase voltage and current relative to the basic vector. For example, to determine the measured voltage and current data, the DSP 128 performs RMS calculations on each digital voltage and current measurement. Signal. This calculation may, for example, include the steps of: multiplying each digital current measurement signal sample by each digital voltage measurement signal sample for each phase to produce a square sample; obtaining the average of the square samples over time; and then obtaining the final average. Square root. To determine the phase angle data for each phase voltage, the DSP 128 determines the time difference between the zero crossings of the phase voltage. Between the special signal and the current ____16________ This paper size is applicable to the Chinese National Standard (CNS) A4 size (210X297 mm) (Please read the note $ on the back before filling this page)

401512 A7. B7 4015 ^ 2 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (6) The time difference between the zero crossings of the signal as the basic vector and the direction of the individual zero crossings provide the phase information. In the above-described exemplary embodiment, VA is regarded as a basic vector. Therefore, the phase angle of VB is measured by the time difference between the zero crossing between V & and VB and the direction of the crossing point. To determine the phase angle data of each phase current, the DSP 128 first determines the wattx & VARX of each phase X. Watts per phase are calculated using a power calculation based on the product of DIG_VX and DIG_IX for each phase X. Each phase VAR is calculated based on the product of DIG, VX, and DIG_Vx (-90 °) for each phase X. In a typical embodiment, the DSP 128 provides VARX and Wattx data, which includes current phase angle information to the controller 108. The controller 108 calculates the measured phase angle 真实 from the data as described below. When the controller receives the measured voltage and current amount and phase angle data from the DSP 128, the controller 108 then decides to measure the voltage and current amount and phase angle 値. Table 1. The following shows each measurement 値 determined by the controller 108. Table 1 VRMSA = phase A voltage amount VRMSB = phase B voltage amount VRMSC = phase C voltage amount IRMSA = phase A current amount IRMSB = phase B current amount IRMSC = phase C current amount _____17 ___ ) A4 size (210X297mm) (Please read the notes on the back before filling this page) Order

P 401512 A7. B7___ 5. Description of the invention (4) ν < Α = phase Λ voltage phase angle V < B = phase B voltage phase angle V < c = phase C voltage phase angle 1 <, phase A current phase angle I < B = Phase B Current Phase 'I < c = Phase C Current Phase Angle Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (Please read the precautions on the back before filling this page) Note that this processor does not need to perform further this measurement Calculation of voltage and current data to obtain relative measurements, such as if the DSP 128 has provided data in RMS format v However, in this embodiment, the controller 108 must implement further calculations that have been determined from the measured voltage and current Phase angle of the measured voltage and current phase angle 値. Specifically, the measured voltage phase angle voltage data includes a series of zero-crossing data, which is converted into a phase angle 値. Those skilled in the art will conveniently program the controller 108 to implement such conversions. The measured current phase angle data includes VARX & Wattx, which the controller 108 converts into a phase angle 値 using the equation I < x = arctan (VARx / Wattx). Alternatively, it is expected that the DSP 128 can be planned to provide the measured voltage and current phase angle data for display in the measurement 値 format in Table 1. As will become more apparent below, the controller 108 uses the measurements from Table 1 to diagnose and compensate for measurement errors. More significantly, including the neutral line and the RMS current of the neutral line, the service form of IRMSN can be determined by adding other currents. Therefore, in a four-wire Y configuration, IRMSN = IRMSa + IRMSb + IRMSc. Figure 5 shows the general operation of the processor of the electrical equipment meter of the present invention. __18 __ ^ __ This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm). Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. B7 V. Description of the invention () Flow chart β In particular, the controller 108 first starts the measurement circuit 104 to operate using a preset configuration (step 502). The preset configuration includes, among other events, the multiplexing. Multiplexing plans for the 116, 118 and 120, POWER calculation, VAR calculation and measurement of voltage and current amount and phase calculation, and other if calculations implemented by the DSP 128, the controller 108 or the DSP 128 and controller 108 A combination of the two. In the present embodiment, the controller initiates the measurement circuit 140 to operate as described above with reference to FIG. 4. The controller 108 obtains a measurement signal from the conversion circuit 106 (step 504). The measurement signal may include measuring a voltage amount, a voltage phase angle, a current amount, or a current phase angle, or any combination thereof. The control unit 108 uses the measurement to determine the service form or current service form of the meter connection (step 506). The controller 108 automatically determines the current service form, as discussed further below in relation to FIG. 6. Appropriate service form recognition features can be easily incorporated into this embodiment and described in U.S. Patent Application Serial No. 08 / 690,973. When the service form is identified, the meter can plan itself to carry out the measurement of the identified service form and the subsequent counts are related to Figure 4 as described above. For example, because different calculations must count three wire delta wiring configurations and four wire crest wiring configurations, the meter needs to be planned by itself to implement a measurement that is suitable for the identified service form. In another embodiment, the meter may be restricted to a special service form or manually planned for a special service form. In some systems, this service form is intended for the meter by setting jumpers or planning DIP switches. Steps 504 and 506 are not necessary in such another meter. However, the identification of the automatic service form significantly increases the versatility of the meter, because no special programming is required. _______19__ This paper size is applicable to China National Standard (.CNS) Α4 size (210 × 297 mm) (Please read the precautions on the back before (Fill in this page)

401512 A7, B7 V. Description of the invention () Designated personnel or pre-planning in the factory. In any event, the controller 108 thereafter periodically performs a diagnosis to determine whether a wiring error exists, and implements a compensation to detect whether a wiring error is detected (block 508). V In particular, the controller 108 first obtains The new measurement of the conversion circuit i compares this to a set of expectations associated with the service form (step 510). The measurement may include the same as those related to the above step 504, or may include a large amount, according to the diagnostic capability of the meter. In this embodiment, the measurement used for diagnosis includes all voltage and current amounts and phases. The controller 108 then determines whether an error exists (step 512). To this end, the controller 108 decides whether each of the measurement frames is within an acceptable tolerance or range for the relative expected volume. If no error is detected, the controller 108 continuously implements the billing function and waits for the next cycle of diagnostic checks (step 508). If an error is detected, the controller 108 performs automatic adjustments as described further below. (Step 514). Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (please read the notes on the back before filling out this page). Consider, for example, a 120-volt, four-wire Y-shaped service meter, as shown in Figure 1. The expected value (with tolerance) is: VRMSA = VRMSB = VRMSc = 120vrms (96 vrms to 138 vrms); V < A = 0. (Reference); V < B = 120. ± 10 °; V < C = 240. Soil 10. : I < A = 0 ° ± 90. , · And I < b = 120. ± 90. ; And I < c = 240. 90 °. What is remarkable is that there is generally no expected amount of current, because the current consumption varies with the user. However, the supply can reach the user to define the expected amount of current for a particular application. In any event, for VRMSa, VRMSb, VRMSC, V < A, V < B, V < c, I < A, I < B, and 1 <. The measurement is based on the Chinese national standard (CNS) A4 (210X297 mm). The paper is printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. Detect. If, however, one or more 或 is not within the expected range 'then the wiring error is indicated. For example, suppose that 値 V < c is not between 230 ° and 250 °, but has 60. Anyway, the controller 108 detects an error β. In these cases, the controller 108 can determine the phase c voltage connection system, 80 ° reverse. This type of reading indicates that the voltage polarity error exists in the phase C voltage measurement. Tester, as shown in Figures 2 and 2a. Referring to the general description of FIG. 4, if an error exists, the controller 108 performs adjustment (step 514) to the measurement circuit 104, and typically the conversion circuit 106 (see FIG. 4). The adjustment is performed relative to the detected error and f is sufficient to increase the accuracy of the meter. In the above case where the polarity is inverted at Vc ', the controller 108 will implement a compensation by providing a control signal to one or more components of the measurement circuit 104 to compensate for the polarity inversion. For example, the controller 108 may provide a signal to the DSP 128, which causes the DSP 128 to multiply all mG_Vc by a factor of -1. FIG. 6 further shows the operation of the meter controller of the exemplary embodiment of the present invention in further detail. In this typical implementation, the controller is used in a meter with a 9S meter type. In general, the operations described below apply equally to other meter styles and require only minor improvements. FIG. 6 shows the main operation circuit of the meter controller, and the meter has a structure similar to that described in FIG. 4. Figure 6 illustrates, among other events, the steps described above in connection with Figure 5 in other billing operations. Regarding Fig. 6 more specifically, after the power is turned on, the controller starts the measurement of the meter. The measuring circuit can have the measuring circuit 21 as shown in Figure 4. The paper size is applicable to the Chinese national standard (CNS> A4 specification (210X297 mm) (please read the precautions on the back before filling this page). Order 401512 Α7. Β7 Printed by the Central Standards Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperative, V. Invention Description (1) 104 with the same function (step 402). The controller plans the measurement circuit to implement the power calculation suitable for the preset wiring configuration. In this case The 'controller' can plan the measurement circuit of the 9S meter to implement the measurement and power calculation for the Y-wire configuration of the four wires. In other embodiments, including these include other meter forms, the controller can of course be planned The measurement circuit is used to implement the measurement and power calculation for different wiring configurations. When the measurement circuit is started, the controller sets two indicators: GoodSvcType = 0,. Represents a good service form 尙 has not been determined; and DoSSCAN = 1, The representative SSCAN will be implemented (step 404). The controller then starts the main loop. In the first step of the main loop (step 406), the control ^ determines the new measured voltage (And current) quantity and phase angle data, or just whether the measurement data has been prepared. New measurement data is typically provided by the conversion circuit every 900 microseconds. The 300 microsecond time frame allows sufficient voltage sampling to be accumulated to implement special RMS quantities Calculate. It will be understood that the precise time period is only given by the case. If new measurement data has been prepared, the controller then processes different energy and demand variables (step 408). Today's electrical meters usually provide for measuring the calculated energy requirements. Many functions. The different energies and required demand variables for these functions are typically updated when each new set of measurement data becomes available. After the energy and required variables have been processed, the controller determines the DoSSCAN indicator State (step 410). If the indicator is set (1), the controller implements the SSCAN path (step 412). The SSCAN path in step 412 attempts to determine the use of the measured voltage and phase data '22 —- β (Please read the note on the back before filling this page)

This paper scale applies the Chinese National Standard (CNS) A4 specification (210 × 297 mm) 401512 A7 B7 V. Description of the invention (w) Service form β To achieve this purpose, the controller compared the measured voltage and phase data as expected. The expected 値 table is shown in Figure 10. Each entry in the table in Figure 10 determines what to expect for a particular form of service. If the measurement is completely similar to one of a set of expectations, then the meter operates under a service governance style relative to the set of expectations, and the GoodSvcType indicator is set (1). If, however, the measurement is not complete Is similar to any group expectation, but the pre-existing service form has been stored in the meter, then the meter is processed under the pre-existing service form without setting the GoodSvcType indicator. Finally, if the measurement is not completely similar to any group expectation, , And no pre-existing service form has been stored, the unknown service form error is set. It can be fully explained as an appropriate path of the SSCAN path of step 412. It can be found in US Patent Application Serial No. 0 / 690,973 ^ When the SSCAN path is completed, the controller resets the SSCAN index to 0 (step 414) and proceeds to step 416. Referring to step 410 again, if the controller determines that the SSCAN indicator is deleted (0), the controller directly proceeds to step 416. Printed by the Central Government Bureau of the Ministry of Economic Affairs of the People's Republic of China for consumer cooperation (please read the notes on the back before filling this page) 0Γ. In step 416, the controller determines whether there is an error in the unknown service form. If there is no unknown service form error, the controller can use the known service form to perform a diagnostic path (step 418) and return to the beginning of the main loop (step 406). This diagnostic path is discussed further below in relation to Figures 7, 7a, 8 and 9. If there is an error in the unknown service form, the controller skips the diagnosis and returns directly from step 416 to step 406. Referring to step 406 again, if the controller decides that the new measurement is not a ____ 23 __; _ This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) Printed by the Bayer Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs ... ...., .'- ·-· *-·, -..... —-'^ — · 431512 A7. B7 — —1' " " '" V. Description of the Invention (Production) When ready, the controller is not executing one or more real-time software lines or events. The real-time events include those performed by the controller at special or regular time intervals. Such real-time events are SSCAN rechecks, which occur every minute in this embodiment. Specifically, if the new measurement data is not ready (step 406), the controller first determines whether one minute has elapsed, and rechecks since the last SSCAN (step 420). SSCAN is preferably checked every minute in order to provide time buffering during power-on of the meter. For example, in the form of a heavy energy meter, such as a 480 volt four wire triangle pattern, the meter is connected to a power source in one phase at a time, and it can take many minutes to connect to the power source. In this type of meter, the controller can be plugged in when the first phase is plugged in, and an attempt can be made to implement SSCAN for many minutes before the other phases are operational. When the controller implements SSCAN before all phases are connected to power, the controller will not be able to discern the service form. If one minute has not elapsed since the most recent SSCAN recheck, the controller skips the SSCAN and rechecks to perform other immediate events (step 422). If, however, one minute has passed since the most recent SSCAN inspection, the controller determines the state of the GoodSvcType indicator (step 424). If the GoodSvcType indicator is set (1), the SSCAN path does not need to be executed, and the controller proceeds to execute other real-time events (step 422). If, however, the GoodSvcType indicator is deleted (0), indicating that the service form is not correctly determined, the controller sets the DoSSCAN indicator to 1 (step 426). With the DoSSCAN indicator set, the controller will implement SSCAN at the next time after the controller executes step 410. In any event, after step 426, the controller advances to one —___ 24 ____ This paper size applies to China National Standards (CNS) A4 (210X297 mm) (Please read the precautions on the back before filling this page) Printed by the Central Standards Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperative, printed 401512 Λ7 ---------- -__ 5. Description of the invention (price) Perform other instant events' and clearly normal billing function (step 422). This other instant event includes other paths whose controllers execute at regular intervals. For example, other real-time events include functions such as display processing, time to use scheduled checks, interval processing and communication. The implementation and details of such other instantaneous events are beyond the scope of the present invention and may be readily incorporated into conventional technology. Figures 7, 7a, 8 and 9 show a detailed flowchart of the operation, which is implemented by the controller of the motor equipment meter to detect wiring errors and to compensate for the detected wiring errors. Generally, the flowcharts in Figures 7, 7a, 8 and 9 illustrate the diagnosis and correction of many phase 4 wiring errors of the same meter, including missing voltage, voltage polarity reversal, current polarity reversal, and cross-phase. The flowcharts of FIGS. 7, 7a, 8 and 9 represent the diagnostic path of step 418 of FIG. 6 in detail. The leak path begins at step 650 of FIG. 7. Figure 7 shows the flowchart of the diagnostic path part. The path detection and implementation of compensation for the wiring error β that caused missing voltage measurement can be explained by referring to Figure 1. Referring to FIG. 1, a missing voltage measurement may occur when one of the phase A, B, or c voltage sensors 26, 28, and 30 is not connected to the opposite power line, respectively. Referring again to FIG. 7, in step 650, the controller determines whether the measured voltage amount 値 is relative to its expected 値. For 9S meter style measurement voltage: 値 Including VRMSA, VRMSB and VRMSC. In other meter styles, such as the 5S meter style, Phase B is not measured and therefore VRMSB does not need to be included. The expectation for several service forms is stored in the memory, for example, 25 paper sizes are applicable to the Chinese National Standard (CNS) A4 specification (21 × 2.97 mm) (Please read the precautions on the back before filling out this page ) Order 9. Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs 401512 A7. ____'_ B7 _ V. Description of the invention (W) Figure 110 memory 110. For example, Figure 10 shows the expected watch for several service formats, in which the 9S meter style is used. The measurements are deemed to be compatible, or compatible, the expected, provided that each measurement is at a pre-defined tolerance level relative to the expected. These conventional techniques can choose an appropriate tolerance water! Ϊ́ 〇 If the measured voltage amount (relative to each tolerance) is relatively expected, or in other words, compatible, the controller moves forward to perform further diagnosis to determine any Whether a wiring error exists (step 702 of FIG. 7a). If, however, the measurements are not compatible, the controller first determines whether any phase voltage measurements are missed when the individual phase currents are still present (step 652). To achieve this, the controller first determines whether any phase has a non-zero measurement current 値, IRMSx 矣 0, but no measurement voltage 値, VRMSx = 0 〇 If there is no current measurement missing from the voltage measurement system, the control The device returns to continue the normal charging function (step 660). In this case, the controller can properly set the error flag and cause such displayed errors. If, however, the controller determines whether the voltage measurement is missed, the controller then determines whether the GoodSvcType indicator is set (step 654). As discussed above in relation to step 412 of FIG. 6, the controller can operate to determine the service form to use the SSCAN path when power is turned on. If the service form is determined in step 402, the GoodSvcType indicator is set. In some cases, however, the meter can be moved from one location to another and installed as a different form of service. In this type of case, the SSCAN path (step 412 in Figure 6) cannot distinguish the service form. When the meter is connected _26__ This paper size applies to Chinese national standards (CNS > A4 specifications (21〇 > < 297 mm) ---------- L ^ --- T *-1 Order ----- 1ΟΓ (Please read the notes on the back before filling this page) 401512 A7. B7 V. Description of the Invention (/) When the service form is indistinguishable, the controller will maintain the previously determined service form and will not set the GoodSvcType indicator. The GoodSvcType indicator is checked at step 654 to manage the situation, where the meter is moved to Different service forms and missing voltage wiring errors. Printed by the Consumer Cooperative Bureau of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back before filling this page). Therefore, if the GoodSvcType indicator is set to 0, the controller Determine the service form and replace the missing voltage measurement (step 656). In particular, the controller determines the service form and replaces the missing voltage measurement using the following method. The controller first selects the first form from the service form table. Candidate service form. As discussed above, the service form table can be stored in memory and includes the same information shown in Figure 10. The controller then replaces the missing voltage, VRMSX with the appropriate key from the table for The first service form. Therefore, the controller implements the SSCAN path to determine that the increase in VRMSX 値 causes the service form to be identified. Assuming this, the identified service form becomes a new service form, and the controller replaces the determination Missing voltage. The missing voltage is replaced by the method described below in relation to step 658. The controller can therefore return to normal operation (step 660). If the increase in VRMSX 値 does not start the identification of the service form, the controller selects the first Two candidate service forms and repeat the above steps: replace the missing voltage VRMSX with the appropriate one from the second candidate service form; and implement the SSCAN path. This process can be repeated until all possible VRMSXs are available, which are appropriate for the different service forms Is replaced and SSCAN is implemented. For example, consider the case where VRMSa = 277, VRMSb = 277, VRMSc = 0 GoodSvcType = 0. At step 656, the controller will select the first candidate in the form of service from the service table in the form of, for example, China National scale suitable quasi Su (CNS) A4 size (210X 297 mm) from the sheet 27 of FIG. 10

J J Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs A7. B7 V. Description of Invention (yt) 4WY-120V service form. The controller will then replace the leakage voltage 値 VRMSC with 120 volts and then implement SSCAN. The SSCAN path will unsuccessfully identify the service form in this type of case because VRMSa = 227, VRMSb = 227, VRMSC = 120 〇 Therefore, the controller will choose a second candidate service form, such as the 4WY-277V service form: The controller replaces VRMSC and implements SSCAN again. The SSCAN path will then successfully identify the 4WY_277V service form because VRMSC is set equal to 277. As a result, in such cases, the controller will implement compensation to replace the phase C voltage measurement with a 277 volt AC waveform. The above process, which begins at step 656, represents an important aspect of the invention. This process may identify a service form, which also misses a phase voltage being identified and subsequently corrected. Referring again to step 654, if GoodSvcType = 1, the controller then proceeds to step 658 »At step 658, the controller performs adjustments that operate to replace a missing voltage. To achieve this, the controller controls the operation of the conversion circuit, such as the conversion circuit 106, to implement the adjustment to replace the missing voltage. Specifically, to implement the proper energy billing calculation, the meter requires that the true voltage waveform be replaced. To replace the waveform, the controller causes the conversion circuit to generate a substituted digital measurement signal. For the missing phase voltage, at least one of the other phase voltage measurement signals is used in an adjusted and / or combined form. To achieve such a substitution, it is significant that each Each phase voltage digital measurement signal can be expressed as a phase shift form of another phase voltage digital measurement or a combination of two other phase voltage digital measurement signals. For example, four γ-shaped matches ______28____ This paper size applies to Chinese national standards (CNS > A4 size (210X297 mm) (Please read the precautions on the back before filling this page)

401512 A7. _____B7 V. Description of the invention (4) Any voltage phase signal of the line configuration can be replaced by the sum of the opposite phases of the remaining two phase voltage signals. Therefore, VA can be expressed as vA =-(vB + vc). In such cases, the controller will cause the DSP to replace the negative sum of samples from phase B and phase C as any term in the POWER equation, which normally requires samples from phase A soil. For example, the calculation of Watt power will be calculated by the DSP using the following formula: (3) POWER =-(CAL_Vb DIG__Vb + CAL_Vc DIG_Vc) * (CAL ″ a DIG_Ia) + (CAL_Vb dig_vb) 氺 (cal_ib dig_ib) + (CAL_Vc DIG_Vc) * (CAL_Ia DIG ″ a- (CAL—Vb DIG_Vb) + CAL_Vc DIG_VB) 氺 (CAL_Ia DIG_IA + (CAL_VB DIG_VB)) ..... (CAL JB DIG_Ib)) + ....... Printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page)

The above calculation is performed by the conversion circuit 106 shown in the manner described below in FIG. 4. Referring to FIG. 4, it is remarkable that in order to implement the above power calculation, the samples DIG_VB and DIG_VC must be provided to the DSP 128 at the same time. As such, the third multiplexer 120 and the third A / D 126 are used to convert and provide a second simultaneous voltage sample to the DSP 128. Specifically, to execute the above-mentioned typical formula in which the phase A voltage is missing, the second multiplexer Π8 will not select the voltage measurement signal from the three voltage sensors 26, 28, and 30 during phase rotation: A , B, C, A, B, C, A, ..... as reached in the normal formula. Instead, the second multiplexer 118 selects the voltage measurement signal to rotate in the following phases: B, B, C, B, B, C, B, .... In a cooperative manner, the third multiplexer 120 selects the voltage measurement Turn below the signal ... C, X, X, C, X, X, C, ..... (where X is "don't care" 値). In this way, the voltage phases from B and c can simultaneously pass the second A / D 124 and the third A / D ___29_ This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) 4〇1512 A7 B7 V. Description of the invention (J) 126 converted and provided to DSP 128 normally accommodates the voltage measurement signal from phase A in the time slot. When the above case illustrates the adjustment of the conversion circuit 106, it is necessary to replace the missing phase A voltage measurement signal. Those skilled in the art will conveniently apply the above technology to the replacement of the phase B and phase C voltage measurement signals. Refer again to FIG. In step 658, the controller can use related technology to replace the voltage in the four-wire delta wiring configuration. For example, a missing phase A voltage signal can be replaced by replacing only the reverse phase B voltage signal. 41 The controller is only Implement appropriate adjustments to replace missing voltages based on the service format. When the controller has implemented appropriate adjustments to replace the missing voltage, the controller may return to normal operation (step 660). Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (please read the notes on the back before filling out this page) Note that other methods can be used to replace a missing voltage signal β such as' the meter's conversion circuit or measurement circuit can include memory Which stored in the header table includes continuous digital voltage measurement samples relative to 120, 277, 240 or 480 volt sine waves. In this case, the conversion circuit can use samples from the memory and insert the appropriate phase relationship to replace a missing voltage phase. Voltage pole piece error Figure 7a shows the operation flow performed by the processor. If step 650 of Figure 7 is shown, the controller determines that all the measured voltage quantities are not compatible. Figure 7a shows the flow chart of the diagnostic path, whose flow determines and implements compensation for voltage polarity reversal. Voltage polarity reversal exists. For example, when the voltage of the meter is 30, the paper size is applicable to China National Standard (CNS) A4 specification (21〇 > < 297 mm) A7 Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs ^ 1512 V. Description of the Invention (4) The device is wired incorrectly. Figures 2 and 2a illustrate the case of the error wiring phase C voltage sensor 30, which causes a voltage polarity error. In operation, the controller first determines the measured voltage phase angle 値 Yes ·. No relative to expected 値 (step 702) . For example, the measured voltage phase angles 98 for 98 meter styles include V < A, V < B, and V < c. Similar to the expected amount 値, the expected phase angle 値 is stored in a memory, such as the memory 110 in FIG. For example, Figure 10 shows the expected phase angle 値 table for several service forms, of which the 9S meter style is applied to the service form. Similar to the measured voltage amount 値, the measured voltage phase angle 値 is considered to match the expected value if each measurement is within a pre-defined tolerance 界定 d relative to the expected value. The conventional technique can select an appropriate tolerance level. If the measured phase angle is not compatible, the controller proceeds to perform further diagnosis of the existence of any wiring error form (step 706) ^ If, however, the measured voltage phase angle is not compatible, then the wiring error is indicated And the controller continues to diagnose and compensate the wiring errors. Generally, the controller determines whether there is a phase voltage polarity error 'or, in other words, if any of v < A, V < B, and v < c is about 180 ° out of phase. To achieve this, the controller executes a flowchart starting at step 704. In step 704, the controller determines whether reversing the phase of the phase A voltage measurement will produce a compatible measured voltage phase angle 値. To this end, the processor adds (or subtracts) 180 ° from the measurements v < B and V < c and re-compares some 値 with the expected 値. Because the V < A system is roughly regarded as the reference phase angle, it is always 0. Inverted vq and V < c provide an adequate estimate of the effect of reversed V < A. If the comparison between the reversed V < B and v < c indicates that the surface electricity is 31________ This paper size is applicable to the Chinese national standard ^? ^ 彳 Specifications "⑴ for the public) (Please read the precautions on the back before filling this page )

401512 A7 B7 V. Description of the invention (π) The voltage phase error is compatible, the voltage polarity error is pointed out and the controller continues to compensate the voltage polarity error (step 708). If not, however, the controller continues its own diagnosis (step 712) ^ At step 708, the controller performs compensation by changing the configuration of the meter measurement circuit or the conversion circuit, such as the phase A measurement is inverted. This can be achieved in several ways' including, for example, phase A digital voltage measurement signal samples multiplied by -1. In the exemplary embodiment described in FIG. 4, the controller 108 may suitably provide a control signal to the DSP 128, which causes the DSP 128 to insert a -1 multiplexer in equation (1) for phase A. The -1 multiplexer can be inserted into the phase A to calculate the calibration constant by the phase A, multiply cala by -1. · Printed bags for employees' cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (please read the notes on the back before filling out this page) Note ^ The use of the reversed phase voltage polarity related to steps 704 and 708 above will compensate for two unique forms The wiring error β is a first form of wiring error that is compensated by reversing the polarity of the phase voltage, which is an error, in which the phase voltage sensor relative to the compensated phase voltage is a reverse wiring. For example, compensating for the phase A voltage measurement will compensate for wiring errors' where the phase A voltage sensor is a reverse wiring. The second wiring error to be compensated at steps 704 and 708 is a case where all phase voltage sensor devices except for the compensated phase voltage are wired backward. In other words, if the phase B and phase C voltage sensors are wired backwards, steps 704 and 708 will effectively reverse the polarity of the phase A voltage measurement. In this case, however, it is remarkable that when the compensation measurement angles ν < A, V < B, and V < c seem to have a right-angle relationship, the angles are all truly 180. Inverted. Such situations will cause errors in subsequent power consumption calculations. Steps 720, 721, 723 and 724, the following description, point out the situation to avoid track errors ° —_— _32 _------ This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) A7. B7 401512 V. Description of the invention (u) To assist in the detection of the effective reversal of all voltage phases in steps 720, 721, 723 and 724, the controller sets compensation, or COMP flag = 1, to indicate at least one The phase voltage measurement signal has been inverted, indicating the possibility of 180 ° phase inversion for all three phase voltages. The controller then returns to normal operation (step 710). In other words, the controller proceeds from step 618 as described above and as shown in FIG. 6. Referring again to step 704, if it is determined that the inversion of the VA phase will not produce a compatible measurement voltage 値, the controller determines whether inverting the VB phase will produce a compatible 値 (step 712). Therefore, in step 712, the controller adds (or subtracts) 180 ° from the measurement V < B and re-compares 値 with the relative period 値 ° if the reversal proves the measurement 包括, including the adjustment V < B is compatible, then the voltage polarity error is indicated for VB and the controller continues to implement compensation for the voltage polarity error (step 714). If not, the controller continues to diagnose (step 716). In step 714, the controller implements the compensation by changing the configuration of the meter measurement circuit so that the bit B voltage measurement phase is reversed. This is achieved by causing the phase B digital voltage measurement digital samples to be multiplied by a factor of -1. An analogy to this technique is described in step 708 for VA phase inversion compensation. When the controller performs compensation, the controller then sets the COMP index equal to 1 (step 719) and returns to the normal position (step 710). In other words, the controller continues from step 418 as shown in FIG. 6 and described above. If, at step 712, it is determined that the phase inversion of the VB will not produce a compatible measurement voltage 値, then the controller decides to invert Vc Whether the phase will be made 33 This paper size is applicable to the Chinese national standard (CNS> A4 size (210x297 mm) ---.- 丨 ^ to do! (Please read the precautions on the back before filling out this page),? Τ Economy Printed by 401512 A7 B7 401512 of the Consumer Standards Cooperative of the Ministry of Standards of the People's Republic of China Ministry of Economic Affairs of the Central Bureau of Standards of the Ministry of Economic Affairs of the People's Republic of China Printed by V. Invention Description (V57) Make compatible 値 (step 716). Therefore, the controller is increased (decreased) ) 180 ° comes from the measurement V < c 値 and the 比较 is compared with the relative expected 値 again. If the comparison verifies each measurement 値, including the adjustment V < c is allowed, then the voltage polarity error is specified at Vc and the control The controller continues to perform compensation for the voltage polarity error (step 718). At step 718, the controller implements the compensation by changing the configuration of the meter measurement circuit so that the phase B voltage measurement phase is reversed. It can be appropriately analogized to the compensation for the phase inversion of VA and VB in steps 708 and 714, respectively. When the controller implements the compensation, the controller then sets the COMP index equal to 1 (step 719), and returns to normal operation (Step 710). In other words, the controller continues from step 418 as shown in Fig. 6 and described above. It is significant that some meter forms do not include phase B measurements for either voltage or current. It will be recognized that the above flowchart may be Appropriately used in such situations. The absence of phase B only has the effect of determining that the solution at step 712 is negative. As a result, the flowchart will operate if step 714 does not exist. • If, however, at step 716, determine the value of Vc. The phase reversal will not produce an allowable measurement voltage phase 値, then the controller continues to diagnose and proceeds to step 802 of Fig. 8. Referring again to Fig. 7a, and in particular step 702, if the controller determines each measured voltage phase angle 値Are compatible, the controller performs further diagnostics starting at step 706. At step 706, the controller determines the current phase angle I < A, I < B and I < c are respectively at the relative voltage phase angles I < A, ___ 34 This paper size is in accordance with China National Standard (CNS) A4 specification (210X297 mm) _---_-- ^ --- ck --- I .--- Order ------- OF (Please read the notes on the back before filling out this page) A7. B7 V. Description of the invention (called) Ϊ < Β 和 I < C within the acceptable range β According to this embodiment, the current 1 < χ is within the acceptable window of V < X, if 1 < χ is within ± 90 ° of V < x. The use of soil 90 ° as an acceptable window allows a wide range of loads in a billable motor system. For example, some loads are almost completely inductive in nature, thus causing almost a 90 ° change between the relative south current and voltage phase angle. If the acceptable window is relatively narrow, such loads can cause the diagnostic path to incorrectly detect a wiring error. If all current phase angles are within acceptable ranges, or in other words are tolerable, no wiring errors are indicated and the controller completes the diagnostic path and returns to normal billing operation as shown in Figure 6. False, but at least one current phase angle is not permissible, the controller continues the diagnosis. In particular, the controller determines whether a current polarity error exists in all phases (step 72). The polarity error of β in all current phases can be caused by many reasons. For example, all the reversible wirings β of the current sensor of the meter are more the same, but the polarity reversal at all phases is compensated by the previous compensation for the voltage polarity reversal at steps 706, 712, or 716, as with step 719. Related Descriptor. Specifically, if two of the three voltage sensors are incorrectly wired, the controller, running with steps 706, 708, 71.2, 714, 716 and 718, will effectively reverse the digital voltage measurement signal at other phases Phase, thus causing the digital voltage measurement signal of all three phases to become 180 ° out of phase. In such cases, the current phase angle and voltage phase angle invert all systems (approximately) 180 ° from each other. Returning to the general description of FIG. 7, in step 720, the controller decides whether increasing (or subtracting) 18 ° from all Ι < Α, Ι < β and I < c will make the manufacturing allowance 35 I: ---.- I 1-I II (Please read the notes on the back before filling this page) Order the paper printed by the Central Consumers ’Cooperative of the Ministry of Economic Affairs. The paper size is applicable to Chinese national standards (CNS> A4 specification (210X297 mm)) Printed by Employee Consumer Cooperative 401512 A7 B7 V. Measured current of the invention description (M). Assuming it is not, the controller continues diagnosis starting at step 802 of Figure 8. However, if all current phase angles are reversed, compatibility will be created Then, the controller determines whether the compensation index COMP is set equal to 1 (step 721). If the answer at step 721 is correct, the controller performs compensation to reverse all the voltage phase angles. Specifically, if the controller Determine that all measured voltage phase angles are 180 ° reverse and relative current phase angles 値 (step 720) and the voltage phase angles have been compensated (step 721), then the controller recognizes the voltage phase angles 値 as compensation, and All 180 ° are reversed. The controller then implements the compensation for reversing all measured voltage phase angles. If, however, in step 721, it is determined that the index COMP is not set equal to, then the controller 1 performs compensation to reverse all the current phase angles. When the controller has implemented the compensation, the controller returns to normal billing operation (step 710). Cross Phase Error Figure 8 shows the continuous process of the diagnostic path flowchart initiated in Figure 7 above. Normally, a part of the flow shown in Figure 8 is shown. Graph detection and compensation are defined as cross-phase errors for wiring errors, as shown in Figures 3 and 3a. There are three possibilities for cross-phase errors: one where 1 < 4 and Ι < B are exchanged, and one of which ^ And I < c are exchanged and one of which I < B and I & C are exchanged. It also shows that because VA is always the reference angle, the voltage cross-phase error only changes whether the order of that phase is ABC or CBA. Such changes It is an allowable and properly considered part of the service form definition. Because 'if there is a voltage cross-phase situation, it is not considered as a wiring error °' but 'the controller Decide the service form including the CBA phase sequence 'as shown in Figure 10. In any event, the controller performs the operation shown in Figure 8 to detect and supplement _36 __—_ This paper size applies Chinese National Standard (CNS) A4 specifications ( 210X297 mm) ----------- L ^-(Please read the notes on the back before filling this page), 11- 401512 A7 B7 V. Description of the invention (β) Compensation for the three possibilities Current cross-phase error. The controller determines whether I < A is within an acceptable window, or in other words, within ± 90 ° of V < A (step 802). Assuming so, no cross-phase error includes the indicated U and the controller proceeds to step 814, which is described further below. Assuming it is not, however, the cross-phase error can be pointed out and the controller next decides whether switching I < A and I < B will make a proper frame (step 804). To achieve this, the controller decides if I < A is within ± 90 ° of V < B and if I < B is within ± 90 ° of V < A. Assuming this, the controller implements a cross phase that compensates for its corrections I < A and I < B (step 806). · Printed by the Central Laboratories of the Ministry of Economic Affairs, Shellfish Consumer Cooperative (please read the precautions on the back before filling out this page) In the typical embodiment of ^ 4, the controller can implement the compensation by providing a control signal to the first multiplexer器 116 和 第二 multiplexer 118. The control signal causes the second multiplexer 118 to provide DIG_Ib sampling to the DSP 128 (via the A / D converter 124) and the same DIG_VA sampling transmission (via the A / D converter 122) to the DSP 128 by the First Multiplexer 116. The controller signal also causes the second multiplexer 118 to provide DIG_Ia samples to the DSP 128 and the same DIG_Vb samples to the DSP 128 through the first multiplexer 116. As described above, the DSP 128 performs the power measurement described in Equation (1) by multiplying the current and voltage samples that arrive simultaneously. As a result of the compensation, the DSP 128 multiplies DIG_VA by DIG_IB when it is received, and DIG_VB by DIG_IA when it is received. In other words, the DSP 128 effectively performs the following improved power measurement: (4) POWER = VaIb + VbIa + VcIc The controller preferably provides other control signals, its switching and 11 and Ib 37 __ This paper standard applies to Chinese national standards (CNS) A4 specification (210X297 mm) Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (sand) Any calibration constant related to the constant so that the constant is applied to the appropriate DIG_V * DIGJ [product β the above The compensation is substantially reduced and effectively removed. The attention error leads to the power consumption measurement of the meter caused by the cross-phase wiring error? Returning to the conference flowchart of FIG. 8 again, if it is decided in step 804 that the exchange Ι < Α and Ι < B will not produce a compatible set of phase angles, the controller next decides to switch Ι < Α and I < c Whether the appropriate frame will be manufactured (step 810). To this end, the controller decides whether the measured I < A is within 90 ° of V < c and if the measured I < c is within ± 90 ° of V < B. If the two conditions are met, the controller implements a compensation that corrects the crossing phase of 1 < * and I < c (step 812). In order to implement the compensation in a typical embodiment of the electrical equipment meter shown in FIG. 4, the controller 108 provides a control signal that causes the first multiplexer 116 to provide the DIG_IC sample to the DSP 128 (through the A / D converter 122) is the same as the 010_ \ sample supplied to the DSP 128, and vice versa. Therefore, the DSP 128 effectively performs the calculation: (5) POWER = VaIc + VbIb + VcIa When the controller implements the compensation, the controller returns to the normal counting operation (step 808). If, however, in step 810, it is decided to return 1 < ^ and 1 < 0 without making a capacitive current phase angle, then the cross error including IA is not indicated. Therefore, the controller performs a further diagnosis to determine the cause of the non-compatible measurement. For I < A, step 902 of FIG. 9 is started, and the following is further investigated. Referring again to step 802, if I < Α series V < A of ± 9 (within T, the 38 paper size applies to the Chinese national standard (CNS > Α4 specification (210 × 297 mm)) ------- --- Γ ^ .-- (Please read the precautions on the back before filling this page) Order 401512 Employee Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs A7. Β7 V. Description of Invention (β) The controller decides whether I < B Within ± 90 ° of ν < B (step 814). Assuming this, no cross-phase error is indicated because it is not 1, or I < B appears to be a cross-phase. Therefore, if the answer to step 814 is yes, The controller continues with step 912 of Fig. 9 and further studies. If, however, it is determined that I < β is shown within ± 90% of V < b, then the controller decides whether to exchange I < B and I < C A compatible current phase angle 値 is made (step 816). To achieve this decision, the controller determines whether the measured I < B is within ± 90 of V < c as described above and if the measured I < c is at V < B Within ± 90 °. If both conditions are satisfied, the cross-phase error is indicated for I < c and V < B The controller implements compensation, which corrects the cross-phase error. (Step 818). To implement the compensation in a typical embodiment of the electrical equipment meter shown in FIG. 4, the controller 108 provides a control signal, which causes the first multiple The worker 116 provides the DIG_IC sampling to the DSP 128 and the DIG_IB sampling to the DSP 128, and vice versa. Therefore, the DSP 128 effectively performs the calculation: (6) POWER = VaIa + VbIc + VcIb when The controller implements the compensation, and the controller returns to the normal charging operation (step 8 0 8). If, however, in step 816 the controller decides to exchange the phase angle 値 I < B and I < c will not make a set of compatible Phase angle 値, no cross-phase wiring error is indicated β. The controller then continues to step 908 of Fig. 9. The current pole 悴 temperature 荇 Fig. 9 shows the continuation of the flowchart of the diagnostic path started in Fig. 7 above. _39___ $ Paper size applies to China National Standard (CNS) Α4 size (210X297mm) " (Please read the precautions on the back before filling in this page)

A7. B7 401512 V. Description of the invention (β) (Please read the notes on the back before filling in this page) The situation is continued in Figures 7A and 8 as described above. Usually, a part of the flowchart shown in Figure 9 is shown and the wiring errors defined as cross-phase errors are compensated. The current polarity error is an error in which one or more phase currents are 180 ° out of phase. The current polarity error, similar to the voltage polarity error, is usually caused by the incorrect wiring of the electric current measuring device to the power line of the motor system being measured. Although the current polarity error is generally identified and compensated during the execution of the flowchart of FIG. 9, it is significant that steps 720, 721, and 724 of FIG. 7a indicate that detection and compensation of a current polarity error occurs in all three phases. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs Referring to FIG. 9, the controller performs step 902 after performing step 810 in FIG. At step 810, the controller has decided that I < A is not in the acceptable range with respect to V < A. Therefore, in step 902 of FIG. 9, the controller determines whether there is a current polarity error in the phase A. To achieve this, the controller determines whether I < a + 180 ° is within ± 90 ° of V < A. Note that in this embodiment, where the acceptable range is within ± 90 ° of V < A, the answer at step 902 is always correct and the decision at step 卯 2 can be excluded. More specifically, step 902 is not reached unless I < a is not within ± 90 ° of V < A and I < A + 18 (Γ will always be within ± 90 ° of V < A. However, in other embodiments, This type of acceptable range may not be used and the decision of step 902 will be necessary.

If the decision is affirmative at step 902, the polarity error is indicated for phase A and the controller performs appropriate compensation (step 904). The compensation may include, for example, providing a signal ' which causes the phase A current sample to be phase inverted. Specifically, in the exemplary embodiment of FIG. 4 'the controller 108 can provide a control signal to the DSP 128' which causes the DSP __40_______ The standard of this paper is applicable to the Chinese National Standard (CNS) A4 specification (210 × 297 mm) Central Printed by the Specimen Bureau Shellfish Consumer Cooperative 491U2 A7 B7 V. Description of Invention (4) 128 Multiply all DIGJU samples by a factor of -1. When compensation is implemented, the controller returns to normal billing operation (step 906), as shown in Figure 6. "If the decision is negative in step 902, the controller may implement additional diagnostics, not shown to determine The source of the non-compliant measurement I < A 値, or simply returns to normal billing operation (step 906). The controller executes step 908 after executing step 816 of FIG. 8. At step 816, the controller has determined that I < A is compatible and I < B is incompatible. Therefore, in step 908 of FIG. 9, the controller determines whether there is a current polarity error in the phase B. To this end, the controller determines whether I < β + 180 ° is within 90 ° of the soil of V < B. In this embodiment, where the acceptable range is within V < B > boe, the answer in step 908 is always correct, and the decision in step 908 can be excluded. However, as discussed above, the decision at step 908 is necessary. If the range of the compatible measurement current phase angle 'is less than: ± 90 ° »If the decision is positive at step 908, the current polarity error is indicated for the phase B and the controller performs appropriate compensation (step 910). The compensation may include, for example, providing a signal to cause the phase B current sampling to be phase inverted. In the exemplary embodiment of FIG. 4, the controller 108 provides a control signal to the D? P 128, which causes the DSP 128 to multiply all DIG_IB samples by a factor of -1. When compensation is implemented, the controller returns to normal billing operation (step 906), as illustrated in FIG. If the decision is negative in step 908, the controller may perform further diagnosis, and if no power source for the non-compliant I < B > is displayed or displayed, it may simply return to normal billing operation (step 906). A paper size is applicable to China National Standard (CNS) A4 (210X297 mm) (Please read the precautions on the back before filling this page)

W Committee member "-:::}. C " ^-Printed by Good Industry Consumer Cooperatives, Intellectual Property Bureau, Ministry of Economic Affairs

. Charging operation steps ^) The controller executes step 912 after performing step 814 in FIG. 8. In step 814, the controller has determined that I < Λ and I < b have acceptable 値 and I < c is not acceptable (see steps 706 and 802). Therefore, in step 912 of FIG. 9, the controller determines whether there is a polarity error in 14. To achieve this, the controller decides I < c + 180. Whether it is within ± 90 of V < c. Inside. As in the case of steps 902 and 908, the answer at step 902 is always correct for this embodiment. However, as discussed above, the decision of step 912 is necessary. In other embodiments, the range of acceptable current phase 値 is less than ± 90. If the decision is positive at step 912, the current polarity error is indicated for the phase. C and the controller implements the appropriate compensation (step 914). This compensation is analogous to the one described above in relation to steps 904 and 910. When compensation is implemented, the controller returns to normal charging operation (step 906), as illustrated in FIG. If the decision is negative in step 912, the wiring error is unsuccessfully diagnosed and the controller returns to normal billing operation (step 906). It is remarkable that the above-mentioned embodiment is merely illustrative. Those skilled in the art can easily design and implement it, which combines the principles of the present invention and is within that spirit and scope. For example, the operations of the DSP 128 of FIG. 4 may be implemented by two or more discrete digital elements. This strong digital processing circuit replaces the DSP component symbol, indicating that those skilled in this art can conveniently apply the Chinese National Standard (cnls) a at an appropriate 42-sheet scale. 丨 · / y (Please read the precautions on the back before filling in this Page) · — 77 ------ Order '-------- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Λ7 「一 -............, -| |,.. C Power line 18 Neutral line 20 Phase A current sensor 22 Phase B current sensor 24 Phase C current sensor 26 Phase A voltage sensor 28 Phase B voltage sensor 30 Phase C voltage sensor 32 First transformer 34 Second transformer 36 Third transformer 102 Sensor circuit 104 Measurement circuit 106 Conversion circuit 108 Processor 110 Non-volatile memory 112 Display 114 Communication port 116 First multiplexer 118 Second multiplexer 120 First Second multiplexer 43 This paper size applies to China National Standard (CNS) A4 (210 χ 29 7g t) (Please read the notes on the back before filling this page)

401512

VIII '. * V. Description of the invention 112 First analog-to-digital converter 124 Second analog-to-digital converter 126 Third analog-to-digital converter 128' Digital signal processor 402, 404, 406, ......, 426 , 502,504,506, ....., 514, 650, 652, ....., 660, 704,706,, 720, 721,722, 723,724, 802,804 ..... 818 ----- Control step 508 block- ------------ ^ ----- (Please read the notes on the back before filling out this page) __IT, ________ Spring. -1''0 Employees ’Consumption of Intellectual Property, Ministry of Economic Affairs The paper size printed by the cooperative applies the Chinese national standard (CNSUl specification (210 X 297 mm)

Claims (1)

fe means congratulations Participant original content Printed by 401512 Jaw C8 D8 of the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 6. Patent application scope 1. A method for detecting and compensating a wiring error, which affects the power consumption measurement of electrical equipment meters, the method includes : A) Obtain measured phase angle data for several phases in a multi-phase motor system; b) Periodically perform one or more diagnostic tests to use the measured phase angle data to determine whether a wiring error exists; and c) automatically adjust the The electrical equipment meter operates to implement compensation for the wiring error, which compensation increases the accuracy of the power consumption measurement of the electrical equipment meter. 2. The method as described in item 1 of the patent application scope, wherein step a) further comprises obtaining measured voltage phase angle data, and wherein step b) further comprises periodically performing one or more diagnostic tests using the measured voltage phase angle data to determine Whether there is a voltage polarity error. The voltage polarity error includes at least a phase voltage of about 180 ° inversion, and step c) further includes automatically adjusting the operation of the equipment meter by implementing compensation for the voltage polarity error. 3. The method according to item 1 of the scope of patent application, wherein step a) further includes measuring current phase angle data and measuring voltage phase angle data, and step b) further includes periodically performing one or more diagnostic tests using the measured voltage The phase angle data and the current phase angle data are measured to determine whether a cross phase error exists, and step c) further includes automatically adjusting the operation of the electrical equipment meter to implement compensation for the cross phase error. 4. The method as described in item 1 of the scope of patent application, wherein step a) further comprises obtaining the phase angle data of the measured current, wherein step b) further includes 2 5 (Please read the precautions on the back before filling this page) --- ^-:, --- Order · --------- Line (210 x 297 mm) fe is congratulated Participant original content Printed by 401512 Jaw C8 D8 of the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 6. Patent application scope 1. A method for detecting and compensating a wiring error, which affects the power consumption measurement of electrical equipment meters, the method includes : A) Obtain measured phase angle data for several phases in a multi-phase motor system; b) Periodically perform one or more diagnostic tests to use the measured phase angle data to determine whether a wiring error exists; and c) automatically adjust the The electrical equipment meter operates to implement compensation for the wiring error, which compensation increases the accuracy of the power consumption measurement of the electrical equipment meter. 2. The method as described in item 1 of the patent application scope, wherein step a) further comprises obtaining measured voltage phase angle data, and wherein step b) further comprises periodically performing one or more diagnostic tests using the measured voltage phase angle data to determine Whether there is a voltage polarity error. The voltage polarity error includes at least a phase voltage of about 180 ° inversion, and step c) further includes automatically adjusting the operation of the equipment meter by implementing compensation for the voltage polarity error. 3. The method according to item 1 of the scope of patent application, wherein step a) further includes measuring current phase angle data and measuring voltage phase angle data, and step b) further includes periodically performing one or more diagnostic tests using the measured voltage The phase angle data and the current phase angle data are measured to determine whether a cross phase error exists, and step c) further includes automatically adjusting the operation of the electrical equipment meter to implement compensation for the cross phase error. 4. The method as described in item 1 of the scope of patent application, wherein step a) further comprises obtaining the phase angle data of the measured current, wherein step b) further includes 2 5 (Please read the precautions on the back before filling this page) --- ^-:, --- Order · --------- Line · This paper size applies to China National Standard (CNS) A4 (210 x 297 mm) 401512 I Co D8 printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 6. The scope of patent application includes periodic implementation of one or more diagnostic tests. Use the measured current phase angle data to determine whether the current polarity error exists. Furthermore, step c) further includes automatically adjusting the operation of the electrical equipment meter to implement compensation for the current polarity error. 5. The method as described in item 1 of the scope of patent application, wherein step a) further comprises obtaining measured voltage and phase angle data and measured current and phase angle data, and step b) further comprises periodically performing one or more diagnostic tests Use the measured voltage and phase angle data and the measured current phase angle data to determine whether one of several wiring errors exists and further distinguish between the wiring errors and several errors if the wiring errors exist, and step c) further includes automatic Adjust the operation of the electrical equipment meter to implement compensation for identified wiring errors. 6. The method according to item 1 of the patent application scope, wherein step a) further comprises measuring the voltage amount data, wherein step b) further comprises periodically performing one or more diagnostic tests using the measured voltage amount data to determine a missing voltage Whether an error exists, wherein the controller is further operable to adjust the operation of the electrical equipment meter to implement compensation for the missing voltage error. 7. The method as described in item 1 of the patent application scope, wherein the controller is further operable to periodically perform one or more diagnostic tests by obtaining expectations from the memory and comparing the measured phase angle data with the expectations値 〇. According to the method described in item 1 of the scope of patent application, it further compares step d) to determine the current service form from several possible service forms relative to the multi-phase motor system. 2 This paper size is applicable to China National Standard (CNS) A4 specification (210 x 297 mm) I ^ .------ a 1: 1 --- 'order --------- line wide ... i (Please read the precautions on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 401512 C8 D8 6. Application for patent scope 9. The method described in item 7 of the scope of patent application, where step a) It further includes obtaining measured voltage data, and wherein the method further comprises: d) obtaining the expected 値 for one or more possible service forms from the memory; and e) comparing the expected 値 for one or more of the possible service forms. May serve the form to the measured voltage data and measured phase angle data. 10. The method as described in item 1 of the patent application scope, wherein step a) further comprises: receiving voltage and current measurement signals for a plurality of phases in a multi-phase motor system; using an analog-to-digital converter to generate the voltage and Digital measurement signal of current measurement signal. The digital measurement signal includes digital voltage measurement signal and digital current measurement signal for each phase of a multi-phase motor system, and generates measurement data using the digital measurement signal. The measurement data includes the measurement voltage. And phase angle data and measured current and phase angle data. 11. The method as described in item 10 of the patent application range, wherein the digital measurement signals each include a sampled waveform including one or more samples, and wherein step a) further includes generating watt data by digital voltage measurement signals Sampling is multiplied by the digital current measurement signal sampling for each phase of the multi-phase motor system. 12. The method as described in item Π of the patent application scope, wherein step a) further comprises generating measurement voltage data by implementing a root mean square calculation to apply the Chinese National Standard (CNS) A4 specification (210 x 297 mm) to this paper size. Li) -------: --- 1 ------- bu-^ --- order --------- line (please read the notes on the back before filling in this (Page) A8 B8 C8 D8 401512 The scope of patent application is the sampling of several digital voltage measurement signals for each phase. 13. The method as described in item 11 of the scope of patent application, wherein step a) further comprises generating measured current data by sampling a number of digital current measurement signals for each phase by implementing a root mean square calculation. 14. The method according to item 11 of the patent application scope, wherein step a) further comprises generating phase voltage data of the measured voltage in the multi-phase motor system using the zero-crossing of the digital voltage measurement signal for several phases. 15. The method according to item 11 of the scope of patent application, wherein step a) further comprises periodically performing one or more diagnostics to use the measurement data to determine whether a voltage polarity error exists, the voltage polarity error including at least one phase voltage system It is approximately 180 ° out of phase, and the controller is further operable to adjust the operation of the meter of the device by implementing compensation for the voltage polarity error. 16. The method according to item 15 of the patent application scope, wherein step c) further comprises implementing compensation for the voltage polarity error by causing the digital signal processor to compare the digital voltage with at least one phase of the multi-phase motor system Multiply the measurement sample by -1. 17. The method according to item 11 of the scope of patent application, wherein step b) further comprises performing one or more diagnostic tests using the measurement data to determine whether a cross-phase error exists, the cross-phase error including a The digital current measurement signal is relative to the second phase of the multi-phase motor system, and the digital current measurement signal is relative to the first phase of the multi-phase motor system, and the controller is further operable to adjust The operation of the electrical equipment meter is implemented for the cross-phase 4 (Please read the precautions on the back before filling this page) -------- Order --------- Wire- {nl · Economy Printed by the Ministry of Intellectual Property Bureau ’s Consumer Cooperatives The paper size is applicable to Chinese National Standards (CNS) A, 1 specifications (210 X 297 issued) 401512 A8 B8 C8 D8 Printed by the Employee ’s Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Compensation for bit errors. 18. The method as described in item Π of the patent application scope, wherein step c) further comprises implementing compensation for the cross-phase error by causing the digital signal processor to generate watt data by digital current measurement signals of the first phase Sampling multiplying the digital voltage measurement signal of the second phase by sampling and multiplying the digital voltage measurement signal sample of the first phase by the digital current measurement signal sample of the second phase "19. The method described in item Π of the scope of patent application, Step c) further includes performing one or more diagnostic tests to use the measurement data to determine whether a current polarity error exists, and wherein the controller is operable to adjust the operation of the electrical equipment meter to implement compensation for the current polarity error. 20. The method as described in claim 19, wherein step c) further comprises implementing the compensation for the voltage polarity error by causing a digital signal processor to relative to the digital of at least one phase of the multi-phase motor system. Multiply the voltage measurement sample by -1. · '21 .—A method for detecting and identifying wiring errors, which affects the power consumption measurement of the electrical equipment meter, the method includes: a) Obtaining measurement data for several phases in a multi-phase motor system, the measurement data Including measuring voltage and phase angle data and measuring current and phase angle data; b) automatically identifying the current motor service form based on the measurement data; and c) periodically implementing the use of one or more of the at least part of the measurement data 5 paper sizes are applicable to China National Standard (CNS) A4 specifications (210 X 297 mm) ------ 1 -------- ^ --------- 2 · (please first Read the precautions on the back and fill in this page) 401512 A8 B8 C8 D8 、 Patent application scope diagnostic test to determine whether a wiring error exists and to distinguish the wiring error from several wiring errors, if the wiring error is detected. 22. The method as described in item 21 of the scope of patent application, including a step: d) automatically adjusting the operation of the electrical equipment meter to implement compensation for the identified wiring error, the compensation increasing the power supply of the electrical equipment meter Consumption measurement accuracy. 23. The method as described in item 21 of the scope of patent application, which includes a step: .d) displaying information on the meter display, which provides a finger relative to the identified wiring error. 24. —A meter for electrical equipment Device, the electrical equipment meter can be operated to be connected to one or more motor service forms, the device can be operated to detect and compensate for wiring errors, the device includes: a) in a multi-phase motor system a conversion circuit for generating Power consumption measurement and used to generate measured phase angle data for several phases; b) memory; and c) a controller is operatively connected to the memory and the conversion circuit, and the processor is operable to operate on a multi-phase motor The system accepts measured phase angle data for several phases, periodically implements one or more diagnostic tests using the measured phase angle data to determine whether a wiring error exists, and automatically adjusts the operation of the conversion circuit to implement the wiring 6 of the error This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) (Please read the note on the back first Please fill in this page again for order) Order --------- line. Consumption cooperation of employees of Intellectual Property Bureau of the Ministry of Economy Du A8 B8 C8 D8 6. Apply for patent scope compensation, which will increase the power consumption of the electrical equipment meter Measurement accuracy 0 (please read the precautions on the back before filling this page) 25. The device described in item 24 of the scope of patent application, wherein the multi-phase motor system includes several phase voltages and phase currents, and The conversion circuit is operable to generate measured phase angle data using the zero crossings of each of the several phase voltages. 26. The device described in claim 24, wherein the multi-phase motor system includes a plurality of phase voltages and a plurality of phase currents, and wherein the conversion circuit is operable to generate watt data and VAR data, and wherein the The measurement circuit is operable to generate measurement phase angle data using the watt data and VAR data. 27. The device described in claim 24, wherein the controller is further operable to periodically perform one or more diagnostic tests using the measured phase angle data to determine whether a voltage polarity error exists, the voltage polarity The error includes at least a phase voltage of approximately 180 ° inversion 'and wherein the controller is further operable to adjust the operation of the meter of the device by implementing compensation for voltage polarity errors. Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 28. The device described in item 24 of the scope of patent application, wherein the controller is further operable to perform one or more diagnostic tests using the measured phase angle data to determine a cross-phase error Whether it exists and where the controller is further operable to adjust the operation of the electrical equipment meter by implementing compensation for cross-phase errors. 29. The device as described in item 24 of the scope of patent application, wherein the controller is further operable to perform diagnosis using one or more of the measured phase angle data. 7 This paper size applies to the Chinese National Standard (CNS) A4 specification (210 x 297). (Mm) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 401512 § D8 6. Apply for a patent range test to determine whether a current polarity error exists, and the controller is further operable to adjust the operation of the electrical equipment meter Implement compensation for current polarity errors. 30. The device as described in claim 24, wherein the conversion circuit in the multi-phase motor system is further operable to generate measured voltage data and measured phase current data for several phases. 31. The device described in claim 30, wherein the conversion circuit is further operable to obtain measured voltage and phase angle data and measured current and phase angle data, and wherein the controller is further operable to Accept the measured voltage amount and phase angle data and measured current amount and phase angle data, and periodically perform one or more diagnostic tests using the measured voltage amount and phase angle data and measured current amount and phase angle data to determine several wirings If one of the errors exists, identify the wiring error and several wiring errors, if the wiring error exists, and adjust the operation of the electrical equipment meter to implement compensation for the identified wiring error. 32. —A device used for electrical equipment meters. The electrical equipment meters can be connected to one or more motor service forms. The device can be operated to detect and compensate for wiring errors. The device includes: a) used to generate power consumption Measurement and conversion circuit for generating measurement data. In multiphase motor systems, the measurement data includes the measurement of digital phase. 8 This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm). (Please read the back Please fill in this page again for attention) ------ tr · -------- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 431512 B8 C8 D8 VI. Patent Application Scope Voltage and Phase Angle Data and Measurement Current and phase angle data; b) memory; and c) a controller is operatively connected to the memory and the conversion circuit, and the processor is operable to receive measured phases for several phases in a multi-phase motor system Angular data, periodically performing one or more diagnostic tests using the measured phase angle data to determine whether a wiring error exists, and automatically adjusting the conversion voltage The operation of the road is to compensate for the wiring error, and the compensation increases the measurement accuracy of the power consumption of the electric meter of the electrical equipment. 33. The device described in claim 32, wherein the controller is further operable to periodically perform one or more diagnostic tests using the measurement data to determine whether a voltage polarity error exists, the voltage polarity error including at least A phase voltage is approximately 180 ° out of phase, and the controller is further operable to adjust the operation of the meter of the device by implementing compensation for voltage polarity errors. 34. The device as described in claim 32, wherein the controller is further operable to perform one or more diagnostic tests using the measurement data to determine whether a cross-phase error exists, and wherein the controller is further Steps can be run to adjust the operation of the electrical equipment meter to implement compensation for cross-phase errors. 35. The device described in item 32 of the scope of patent application, wherein the controller is further operable to implement the use of one or more diagnostic tests using the measurement data to 9 (please read the precautions on the back before filling this page)- — — I —Order · — ---, Γ) Γ This paper size applies to Chinese National Standard (CNS) A4 (210x 297 mm) 401512 g D8 6. The scope of patent application determines whether a current polarity error exists, and where The controller is further operable to adjust the operation of the electrical equipment meter to implement compensation for current polarity errors. 36. The device described in claim 32, wherein the controller is further operable to perform one or more diagnostic tests using the measurement data to determine whether a missing voltage error exists, and wherein the controller is further operable The operation of the motor meter is adjusted to compensate for the missing voltage error. 37. The device as described in claim 32, wherein the controller is further operable to perform one or more diagnostic tests by obtaining expected data from memory and comparing the measured data to expected data. 38. The device described in claim 32, wherein the controller is further operable to determine a service form relative to a multi-phase motor system from several possible service forms. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page) LINE 39. The device described in item 38 of the scope of patent application, where the memory includes a number of possible services The expectation of the form, and the controller is further operable to determine the service form relative to the multi-phase motor system by obtaining the expectation, which is used from one or more possible service forms from the memory and compared to one or most possible service forms The expected value becomes the measurement data. 40. The device described in claim 32, wherein the conversion circuit includes at least one analog-to-digital ("A / D") converter operable in a multi-phase motor system to receive voltage and current for the digital phase The measurement signal and the digital measurement signal are generated. The digital measurement signal includes digital voltage measurement. 10 This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 x 297 mm). Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 01512 g D8 6 The patent application scope of the quantity signal and the digital current measurement signal for each phase of the multi-phase motor system, and wherein the conversion circuit further includes a device for receiving the digital measurement signal and generating the measurement data. 41. The device according to item 40 of the scope of patent application, wherein the digital measurement signals each include a sampled waveform including one or more samples, and wherein the conversion circuit generates watt data by multiplying the digital voltage measurement signal samples by Sample the digital current measurement signal for each phase. 42. The device as described in item 41 of the scope of patent application, wherein the device for receiving the digital measurement signal and generating the measurement data is operable to generate measurement voltage data by performing a root mean square calculation on each phase. Digital voltage measurement signal sampling. 43. The device as described in item 42 of the scope of patent application, wherein the device for receiving the digital measurement signal and generating the measurement data is operable to generate measurement current data by performing a root mean square calculation on each phase. Digital current measurement signal sampling. 44. The device as described in item 41 of the scope of patent application, wherein the device for receiving the digital measurement signal and generating the measurement data is operable to generate zero-crossing measured voltage phase angle data using the digital voltage measurement signal. Several phases of a polyphase motor system. 45. The device as described in claim 41, wherein the controller is further operable to periodically perform one or more diagnostic tests using the measurement data to determine whether a voltage polarity error exists, the voltage polarity The error includes at least a phase voltage of about 180 ° inversion, and wherein the controller is further operable to adjust the operation of the meter of the device by implementing the Chinese National Standard (CNS) A4 specification (210 X 297 mm) for the size of the electrical paper. (Please read the precautions on the back before filling in this page) V .— „----- Order --------- Line C3 Λ8 B8 C8 D8 VI. Compensation for voltage polarity error in the scope of patent application. 46 The device according to item 45 of the patent application scope, wherein the controller is operable to implement compensation for the voltage polarity error by causing the device for receiving the digital measurement signal and generating the measurement data to be compared with at least the One of the multi-phase motor systems. The digital voltage measurement signal is sampled and multiplied by -1 〇47. The device as described in item 41 of the patent application scope, wherein the controller is further operable to One or more diagnostic tests are performed using the measurement data to determine whether a cross-phase error exists. The cross-phase error includes a digital current measurement signal for the first phase with respect to the second phase of the multi-phase motor system. The digital current measurement signal of the second phase is relative to the first phase of the multi-phase motor system, and wherein the controller is operable to adjust the operation of the electrical equipment meter to implement compensation for the cross-phase error. The device described in item 47 of the patent scope, wherein the controller is further operable to perform compensation for the cross-phase error by causing a device for receiving digital measurement signals and generating measurement data to generate watt data by first Multiply the digital current measurement signal sample of the phase by the digital voltage measurement signal sample of the second phase and multiply the digital voltage measurement signal sample of the first phase by the digital current measurement signal sample of the second phase. The device described in the item, wherein the controller is further operable to implement Use one or more diagnostic tests of the measurement data to determine whether a current polarity error exists, and wherein the controller is further operable to adjust the operation of the electrical equipment meter to implement the application of the Chinese National Standard (CNS) to the current pole 1¾ scale A4 size (210 X 297 mm) (Please read the notes on the back before filling in this page) -nn > ^ 1 ϋ 1.1 · ϋ nnnnn I-Printed by the Intellectual Property Bureau Staff Consumer Cooperatives of the Ministry of Economic Affairs A8 B8 C8 D8 4D1512 6. Compensation for errors in the scope of the patent application. 50_ The device described in item 49 of the scope of the patent application, wherein the controller is operable to implement compensation for the current polarity error by causing it to receive the digital measurement signal and The device generating the measurement data multiplies the current voltage measurement signal sample with respect to at least one phase of the multi-phase motor system by -1 051. The device described in item 41 of the patent application scope, wherein the controller is further capable of Operates to perform a diagnostic test using one or more of the measurements to determine whether a missing voltage error exists, and where System is further operable to adjust the operation of the motor of the metering device to the embodiments compensate for missing voltage error. 52. —A device used for electrical equipment meters, which can be operated and connected to one or more motor service forms. The device can be operated to detect and compensate for a wiring error. The device includes: a) in multiple In the phase motor system, a conversion circuit is used to generate power consumption measurements and generate measurement data. The measurement data includes voltage and phase angle data and current and phase angle data for several phases; b) memory; and c) a The controller is operatively connected to the memory and the conversion circuit, and the processor is operative to receive measurement data for several phases in a multi-phase motor system, identify a current motor service form based on the measurement data; and implement at least Part of the measurement data and one or more diagnostic tests of the current motor service form to determine whether a wiring error exists and to identify that this paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 public love) (please first Read the notes on the back and fill in this page) vi " '-----— .. Order --------- line (0- Consumers Printed by Du Du printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and printed by the Consumer Cooperative of A8 B8 401512_S____ 6. Scope of patent application Wiring errors and several wiring errors, if wiring errors are detected. 53. As described in item 52 of the scope of patent applications Device, wherein the controller is further operable to: automatically adjust the operation of the electrical equipment meter to implement compensation for the discrimination wiring error, which compensation increases the accuracy of the power consumption measurement of the electrical equipment meter. 54. If applying for a patent The device according to the scope item 52, further comprising a display connected to the controller for displaying information, which provides an indication relative to the discrimination of the wiring error.. 55. The device according to the scope of the patent application scope item 52, wherein the control The device is further operable to periodically perform one or more diagnostic tests using the measurement data to determine whether a voltage polarity error exists, the voltage polarity. The error includes at least a phase voltage of approximately 180 ° inversion, and wherein the controller further Operable to adjust the operation of the meter of the device Compensation for polarity error. 56. The device as described in claim 52, wherein the controller is further operable to perform one or more diagnostic tests using the measurement data to determine whether a cross-phase error exists, and The controller is further operable to adjust the operation of the electrical equipment meter to implement compensation for the cross-phase error. 57. The device described in claim 52 of the patent application scope, wherein the controller is further operable to implement the measurement One or more diagnostic tests of the data to determine whether a current polarity error exists, and the controller is further operable to adjust the operation of the electrical equipment meter to implement the Chinese National Standard (CNS) A4 specification for the current 14 paper size (210 X 297 mm). (Please read the notes on the back before filling this page) 4B15lk 6. Scope of Patent Application Compensation for Polarity Error. 58. The device described in claim 52, wherein the controller is further operable to perform one or more diagnostic tests using the measurement data to determine whether a missing voltage error exists, and wherein the controller is further operable Operation to adjust the operation of the motor meter to implement compensation for missing voltage errors. 59. The device described in claim 52, wherein the controller is further operable to periodically perform one or more diagnostic tests by obtaining expectations from the memory and comparing the measurement data to the expectations. . (Please read the precautions on the back before filling this page) ----- ^ ---, order · -------- green National Standard (CNS) A4 specification (210 X 297 mm)